Samplers

A sampler plays back recorded audio, while a sequencer arranges and triggers musical events – samplers often incorporate sequencing capabilities, but they are fundamentally different tools.

It depends on the length and number of samples you intend to use; longer, multi-layered samples require more memory, and consider headroom for future expansion.

Generally, yes, but file format compatibility and sample rate/bit depth support will vary between models. Check the specifications carefully.